Datasheet LT8613 (Analog Devices) - 3

link to page 2 LT8613
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum On-Time ILOAD = 2A, SYNC = 0V l 20 40 60 ns ILOAD = 2A, SYNC = 3.3V l 20 35 55 ns Minimum Off-Time 50 85 120 ns Oscillator Frequency RT = 221k, ILOAD = 1.5A l 180 210 240 kHz RT = 60.4k, ILOAD = 1.5A l 665 700 735 kHz RT = 18.2k, ILOAD = 1.5A l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance ISW = 1A 65 mΩ Top Power NMOS Current Limit l 7.5 9.7 12.0 A Bottom Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 29 mΩ Valley Current Limit VINTVCC = 3.4V l 6 10 12 A SW Leakage Current VIN = 42V, VSW = 0V, 42V –10 0.1 10 µA EN/UV Pin Threshold EN/UV Rising l 0.94 1.0 1.06 V EN/UV Pin Hysteresis 40 mV EN/UV Pin Current VEN/UV = 2V –20 1 20 nA PG Upper Threshold Offset from VFB VFB Falling l 6.5 9.0 11.5 % PG Lower Threshold Offset from VFB VFB Rising l –6.5 –9.0 –11.5 % PG Hysteresis 1.3 % PG Leakage VPG = 3.3V –40 40 nA PG Pull-Down Resistance VPG = 0.1V l 680 2000 Ω SYNC Threshold SYNC Falling 0.7 1.0 1.4 V SYNC Rising 1.0 1.3 1.55 V SYNC Pin Current VSYNC = 2V –100 100 nA TR/SS Source Current l 1.4 2.1 2.7 µA TR/SS Pull-Down Resistance Fault Condition, TR/SS = 0.1V 230 Ω Current Sense Voltage (VISP-ISN) VICTRL = 1.5V, VISN = 3.3V l 48 50 52 mV VICTRL = 1.5V, VISN = 0V l 46 50.5 56 mV VICTRL = 800mV, VISN = 3.3V l 38 41 46 mV VICTRL = 800mV, VISN = 0V l 37 42 47 mV VICTRL = 200mV, VISN = 3.3V l 5 10 15 mV VICTRL = 200mV, VISN = 0V l 4 10.5 17 mV IMON Monitor Pin Voltage VISP-ISN = 50mV, VISN = 3.3V l 0.960 1.00 1.040 V VISP-ISN = 50mV, VISN = 0V l 0.890 0.99 1.09 V VISP-ISN = 10mV, VISN = 3.3V l 130 220 320 mV VISP-ISN = 10mV, VISN = 0V l 110 205 300 mV ISP, ISN Pin Bias Current l –20 20 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. High junction temperatures degrade operating may cause permanent damage to the device. Exposure to any Absolute lifetimes. Operating lifetime is derated at junction temperatures greater Maximum Rating condition for extended periods may affect device than 125°C. reliability and lifetime.
Note 3:
This IC includes overtemperature protection that is intended to
Note 2:
The LT8613E is guaranteed to meet performance specifications protect the device during overload conditions. Junction temperature will from 0°C to 125°C junction temperature. Specifications over the –40°C exceed 150°C when overtemperature protection is active. Continuous to 125°C operating junction temperature range are assured by design, operation above the specified maximum operating junction temperature characterization, and correlation with statistical process controls. The will reduce lifetime. LT8613I is guaranteed over the full –40°C to 125°C operating junction Rev. A For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts